Chapter 19 Electrochemistry Multiple Choice Section 19.1 1. An electrolyte is a. a solute which conducts electrical energy. b. an inert electrode which conducts electrical energy. c. a metal which conducts electrical energy through a solution. * d. a compound that conducts electricity either in solution or in the molten state. e. a solution which conducts electricity. Section 19.1 2. Anions * a. are charged ions which move toward the anode of a galvanic or electrolysis cell. b. are charged ions which move toward the negative electrode of an electrolysis cell. c. are charged ions which move toward the north pole of a magnetic field. d. are positively charged ions which result from electrical discharge in a liquid solution. e. are ions which attach themselves to any electrode to react chemically during electrolysis. Section 19.1 3. Cations a. are negatively charged ions which result from electrical discharge in a liquid solution. * b. are charged ions which move toward the cathode of a galvanic or electrolysis cell. c. are charged ions which move toward the positive electrode of an electrolysis cell. d. are charged ions which move toward the south pole of a magnetic field. e. are ions which attach themselves to any electrode to react chemically during electrolysis. Section 19.1 4. A galvanic cell has two electrodes. Which statement is correct? a. Oxidation takes place at the anode, which is positively charged. * b. Oxidation takes place at the anode, which is negatively charged. c. Oxidation takes place at the cathode, which is positively charged. d. Oxidation takes place at the cathode, which is negatively charged. e. Oxidation take place at the dynode, which is uncharged. Section 19.1 5. A galvanic cell has two electrodes. Which statement is correct? a. Reduction takes place at the anode, which is positively charged. b. Reduction takes place at the anode, which is negatively charged. * c. Reduction takes place at the cathode, which is positively charged. d. Reduction takes place at the cathode, which is negatively charged. e. Reduction takes place at the dynode, which is uncharged. Section 19.1 6. A galvanic cell consists of a Cu( s )|Cu 2+ ( aq ) half cell and a Zn( s )|Zn 2+ ( aq ) half-cell connected by a salt bridge. Oxidation occurs in the zinc half-cell. The cell can be represented in standard notation 146

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